@misc{indiciae61de4851bc67,
  title = {One standard or two?},
  author = {A Seldon},
  year = {1970},
  doi = {10.1016/s0140-6736(70)91175-x},
  url = {https://pubmed.ncbi.nlm.nih.gov/4191649/},
  note = {Source identifier: 4191649}
}